Pyloric scar stenosis

The pylorus is the narrowest part of the digestive tract, with a normal diameter of about 1.5 cm, so it is prone to obstruction. Due to pyloric passage obstacles, gastric contents cannot smoothly enter the intestine, but a large amount of retention in the stomach leads to hypertrophy of the gastric wall muscle layer, scarring and narrowing of the pylorus, enlargement of the gastric cavity and inflammation, edema and erosion of the gastric mucosa. Clinically, patients can not eat normally for a long time, and a lot of vomiting, leading to severe malnutrition, hypoproteinemia and anemia, and severe water and electrolyte disorders such as dehydration, hypokalemia and alkalosis. Scarred pyloric stenosis is more common. Chronic ulcers cause submucosal fibrosis and hinder pyloric passage caused by scarring stenosis, preventing food and gastric juices from passing smoothly.